Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2009 | Oct-Nov | (P1-9709/12) | Q#2
i. Find, in terms of the non-zero constant , the first four terms in the expansion of in ascending powers of .
ii. Given that the coefficients of and in this expansion are equal, find the value of .
Expression for the Binomial expansion of is:
In the given case:
Since the coefficients of and in this expansion are equal